42343810013 has 2 divisors, whose sum is σ = 42343810014. Its totient is φ = 42343810012.

The previous prime is 42343810009. The next prime is 42343810097. The reversal of 42343810013 is 31001834324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41078371684 + 1265438329 = 202678^2 + 35573^2 .

It is a cyclic number.

It is not a de Polignac number, because 42343810013 - 2² = 42343810009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42343800013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171905006 + 21171905007.

It is an arithmetic number, because the mean of its divisors is an integer number (21171905007).

Almost surely, 2^42343810013 is an apocalyptic number.

It is an amenable number.

42343810013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42343810013 is an equidigital number, since it uses as much as digits as its factorization.

42343810013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 42343810013 in words is "forty-two billion, three hundred forty-three million, eight hundred ten thousand, thirteen".